Interference Device

Fig. 1 . 1 is a front view of an interference device showing our new design;

Fig. 1 . 2 is a rear view thereof;

Fig. 1 . 3 is a left side view thereof;

Fig. 1 . 4 is a right side view thereof;

Fig. 1 . 5 is a top view thereof;

Fig. 1 . 6 is a bottom view thereof; and

Fig. 1 . 7 is a top perspective view thereof.

The broken lines in the figures depict portions of the interference device that form no part of the claimed design.